Improvements for Gantt exporting

Would like to see more options for exporting Gantt charts if possible such as the following:

- Export to A4 and still scale the work plan + gantt to one page

- Have the legend fit on the same page when exported to one page

- Have the option to add shading for a custom period (such as every 2 weeks) or a background grid to be able to better see how dates line up with Gantt